President Obama paid nearly double the tax rate of Mitt Romney in 2010, despite earning only a fraction of the income.

The president paid 25 percent of his gross income in federal tax, compared to Romney’s 13.7 percent.

The difference is sure to renew debate about tax rates in general, and wealthier Americans, in particular, paying lower rates than most taxpayers. The president has signaled that such divides will be a central theme of his State of the Union address tonight.

The Obamas’ gross income was $1.8 million and they paid $454,000 in federal taxes. The Romneys reported earning $21.7 million and paying $3 million in taxes, POLITICO’s Maggie Haberman reported.